Abstract
Why do particular foreign policy strategies persist even when they fail to achieve their objectives? And how do such policies eventually come to change? Incorporating policy paradigms as a unifying unit-level intervening variable within a Type II neoclassical realist framework, we account for extended periods of foreign policy continuity despite ongoing policy failure, and theorise the structural conditions necessary to override intervening paradigmatic imperatives. The article illustrates the argument through an analysis of the ‘Obama thaw’, after 50 years of hostile policy towards Havana. Drawing on interviews with key officials, we show that emerging structural pressures in the Western hemisphere brought about the administration’s decision to normalise relations with Cuba.